public final class TailCallLoop extends UnaryExpression
operandEFFECTIVE_BOOLEAN_VALUE, EVALUATE_METHOD, EVENT_FEED_METHOD, INHERITED_CONTEXT, INSPECTION_CONTEXT, ITEM_FEED_METHOD, ITERATE_METHOD, locationId, MAX_SEQUENCE_LENGTH, MAX_STRING_LENGTH, NAVIGATION_CONTEXT, NODE_VALUE_CONTEXT, PROCESS_METHOD, PUSH_SELECTION, staticProperties, UNBOUNDED_LOWER, UNBOUNDED_UPPER, W3C_CONSUMING, W3C_FREE_RANGING, W3C_GROUP_CONSUMING, W3C_MOTIONLESS, WATCH_METHOD| Constructor and Description |
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TailCallLoop(UserFunction function)
Constructor - create a TailCallLoop
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| Modifier and Type | Method and Description |
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Expression |
copy()
Copy an expression.
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Item |
evaluateItem(XPathContext context)
Evaluate as an Item.
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UserFunction |
getContainingFunction()
Get the containing function
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ExpressionCompiler |
getExpressionCompiler()
Return the compiler of the TailCallLoop expression
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String |
getExpressionName()
Give a string representation of the expression name for use in diagnostics
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int |
getImplementationMethod()
An implementation of Expression must provide at least one of the methods evaluateItem(), iterate(), or process().
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ItemType |
getItemType(TypeHierarchy th)
Determine the data type of the items returned by the expression
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SequenceIterator |
iterate(XPathContext context)
Iterate over the sequence of values
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void |
process(XPathContext context)
Process the function body
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Expression |
typeCheck(ExpressionVisitor visitor,
ExpressionVisitor.ContextItemType contextItemType)
Type-check the expression
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computeCardinality, computeSpecialProperties, displayOperator, equals, explain, getBaseExpression, hashCode, iterateSubExpressions, optimize, promote, replaceSubExpression, simplify, toStringaddToPathMap, adoptChildExpression, checkForUpdatingSubexpressions, checkPermittedContents, computeDependencies, computeStaticProperties, doPromotion, dynamicError, effectiveBooleanValue, evaluateAsString, evaluatePendingUpdates, explain, getCardinality, getColumnNumber, getColumnNumber, getConstructType, getContainer, getDependencies, getEvaluationMethod, getExecutable, getHostLanguage, getIntegerBounds, getIntrinsicDependencies, getLineNumber, getLineNumber, getLocationId, getLocationProvider, getObjectName, getProperties, getProperty, getPublicId, getSlotsUsed, getSpecialProperties, getStreamability, getStreamingAdjunct, getSystemId, getSystemId, hasVariableBinding, implementsStaticTypeCheck, isSubtreeExpression, isUpdatingExpression, isVacuousExpression, iterateEvents, iterateSubExpressionInfo, markTailFunctionCalls, resetLocalStaticProperties, setContainer, setEvaluationMethod, setFiltered, setFlattened, setLocationId, staticTypeCheck, suppressValidation, toPattern, toStreamingPattern, typeErrorpublic TailCallLoop(UserFunction function)
function - the function in which this tail call loop appearspublic UserFunction getContainingFunction()
public Expression typeCheck(ExpressionVisitor visitor, ExpressionVisitor.ContextItemType contextItemType) throws XPathException
typeCheck in class UnaryExpressionvisitor - an expression visitorcontextItemType - the static type of "." at the point where this expression is invoked.
The parameter is set to null if it is known statically that the context item will be undefined.
If the type of the context item is not known statically, the argument is set to
Type.ITEM_TYPEXPathException - if an error is discovered during this phase
(typically a type error)public int getImplementationMethod()
getImplementationMethod in class ExpressionExpression.ITERATE_METHOD or Expression.EVALUATE_METHOD or
Expression.PROCESS_METHODpublic Expression copy()
copy in class Expressionpublic SequenceIterator iterate(XPathContext context) throws XPathException
iterate in class Expressioncontext - supplies the context for evaluationXPathException - if any dynamic error occurs evaluating the
expressionpublic Item evaluateItem(XPathContext context) throws XPathException
evaluateItem in class Expressioncontext - The context in which the expression is to be evaluatedXPathException - if any dynamic error occurs evaluating the
expressionpublic void process(XPathContext context) throws XPathException
process in class Expressioncontext - The dynamic context, giving access to the current node,
the current variables, etc.XPathException - if a dynamic error occurspublic ExpressionCompiler getExpressionCompiler()
getExpressionCompiler in class Expressionpublic ItemType getItemType(TypeHierarchy th)
getItemType in class UnaryExpressionth - The type hierarchy cachepublic String getExpressionName()
getExpressionName in class ExpressionCopyright (c) 2004-2013 Saxonica Limited. All rights reserved.